Swivel body for a top drive in a wellbore derrick

Description

FIG. 1 is a perspective view of a design for a swivel body according to the present invention.

FIG. 2 is a top view of the swivel body of FIG. 1.

FIG. 3 is a first side view of the swivel body of FIG. 1.

FIG. 4 is a bottom view of the swivel body of FIG. 1.

FIG. 5 is a second side view of the swivel body of FIG. 1, opposite the first side shown in FIG. 3.

FIG. 6 is a front view of the swivel body of FIG. 1; and,

FIG. 7 is a rear view of the swivel body of FIG. 1.

Claims

CLAIM The ornamental design for a swivel body for a top drive in a wellbore derrick, as shown and described.

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Inventors:	Folk; Robert Alden (Calgary, CA), Folk; Steven Lorne (Sherwood Park, CA)
Assignee:	Varco I/P, Inc. (Houston, TX)
Appl. No.:	D/208,314
Filed:	June 24, 2004

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Related U.S. Patent Documents

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	Application Number	Filing Date	Patent Number	Issue Date
	10862787	Jun 7, 2004

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Current U.S. Class:	D15/140
Current International Class:	1509
Field of Search:	;D15/140 ;166/70,154-156,177.4,285,75.14,76.1,90.1,92.1,97.5,250.1,193,78.1,291,77.52 ;173/44 ;175/85,267,40,65

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References Cited [Referenced By]

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U.S. Patent Documents

4010600	March 1977	Poole et al.
4115911	September 1978	Poole et al.
4187920	February 1980	Johnson
4205423	June 1980	Poole et al.
4219087	August 1980	Johnson
4421179	December 1983	Boyadjieff
4449596	May 1984	Boyadjieff
4458768	July 1984	Boyadjieff
4529045	July 1985	Boyadjieff et al.
4589503	May 1986	Johnson et al.
4605077	August 1986	Boyadjieff
4753300	June 1988	Shaw et al.
4759239	July 1988	Hamilton et al.
4793422	December 1988	Krasnov
4800968	January 1989	Shaw et al.
4813493	March 1989	Shaw et al.
4854383	August 1989	Arnold et al.
4865135	September 1989	Moses
4878546	November 1989	Shaw et al.
5236035	August 1993	Brisco et al.
5293933	March 1994	Brisco
5950724	September 1999	Giebeler
6276466	August 2001	Boyd
6634423	October 2003	Giebeler et al.

Other References

An Overview of Top-Drive Drilling Systems Applications and Experiences, G.I. Boyadjieff, IADC/SPE 14716, 8 pp. 1986. cited by other . Varco Pioneers AC Top Drive, Engineering Award Winners, AC Top Drive Technology Update #1, Hart's Petroleum Engineer, 4 pp., Apr. 1997. cited by other . Challenger Rig & Mfg., Inc., Doghouse, Composite Catalog 1982-83, p. 1984-C, 1982. cited by other . AC Top Drive Technology Update #2, Varco Systems, 1 p. Prior to 2002. cited by other . Top Drive Drilling System TD 500 PAC Variable Frequency AC Top Drive, National Oilwell, 6 pp., 2002. cited by other . 1000 Ton AC Top Drive--TDS--1000, Varco Systems, 2 pp., 2002. cited by other . 750 Ton DC Top Drive TDS--45, Varco Systems, 2 pp., 2002. cited by other . 500 Ton DC Top Drive IDS--1, Varco Systems, 2 pp., 2002. cited by other . Varco's Top Drive Systems are advancing the technology of drilling, Varco Systems, 8 pp., 2001. cited by other.

Primary Examiner: Davis; Antoine D.
Attorney, Agent or Firm: McClung; Guy